Pellet fuelling experiments in the HL-1M tokamak

Autor:	Hl M Team, Zhengui Xiao, L.W. Yan, Bo Li, Yinjia Zheng, Zhen Feng, Yong Liu, Zhongchao Deng, Jiafu Dong, Enyao Wang, Li Li
Rok vydání:	2002
Předmět:	Nuclear and High Energy Physics Tokamak Materials science business.industry medicine.medical_treatment Injector Plasma Condensed Matter Physics Ablation law.invention Magnetic field Optics law Electromagnetic shielding Pellet medicine business Penetration depth
Zdroj:	Nuclear Fusion. 42:265-270
ISSN:	1741-4326 0029-5515
DOI:	10.1088/0029-5515/42/3/306
Popis:	An eight shot pellet injector is used to fuel the HL-1M tokamak from the low field side. The pellet ablation process is investigated with a CCD camera and an array of Hα emission detectors. It is observed that the velocity of the pellet ablation cloud is obviously slowed down after it enters the plasma. The ablation clouds are elongated along the magnetic field direction. By means of multi-exposures with the CCD camera during pellet ablation, the safety factor profile is estimated with the ablation cloud inclination angles with respect to the torus on HL-1M. The pellet penetration depth is analysed with Abel inversion of the Hα emissions. The result is compared with the prediction of ablation models. Kuteev’s model is more suitable for describing pellet ablation processes in the HL-1M plasma than the neutral gas shielding model.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a445dbdb7e6920f80e61271d79db0c97 https://doi.org/10.1088/0029-5515/42/3/306 Zobrazit plný text záznamu